Exam 2: Introductory Chemistry

Certain sex hormones such as estrogens and testosterone are classified chemically as

A solution with a high hydrogen ion concentration has a _____ pH.

Substances that cannot be broken down into simpler substances by ordinary chemical means are called

Negatively charged particles in an atom are called

A substance that can be dissolved in a solvent is called a/an _____.

A compound is a molecule composed of two or more different elements.

Which of the following is NOT one of four major elements that make up about 96% of the human body's mass?

Water requires a large amount of heat to change from a liquid to a gas.

In addition to the four major elements, there are an additional ___ lesser elements that make up approximately 3.6% of the body's mass.

Which of the following molecules contains polar covalent bonds?

A chemical bond formed between two oppositely charged ions is a/an

Inorganic compounds always contain carbon.

The building blocks of nucleic acids are called

To prevent rapid, drastic changes in the pH of body fluids, the body

Certain types of unsaturated fats are beneficial to our health.

A solution with a pH of 7 is slightly basic.

The backbone and rings of all organic molecules are formed by

If the chemical reaction shown in the figure proceeds from right to left (indicated by arrow labeled E in the figure)leading to the breakdown of the substrate sucrose (labeled C in the figure), which of the following enzymes is most likely to catalyze this reaction?

A change in the shape of a protein that results in loss of function is called denaturation.

Which of the labeled chemicals in this reaction are considered to be carbohydrates?